World Health Organization. (1999). The role of public policy in prevention and control of sexually transmitted infections. World Health Organization.
Chicago-referens (17:e uppl.)World Health Organization. The Role of Public Policy in Prevention and Control of Sexually Transmitted Infections. Geneva, Switzerland: World Health Organization, 1999.
MLA-referens (8:e uppl.)World Health Organization. The Role of Public Policy in Prevention and Control of Sexually Transmitted Infections. World Health Organization, 1999.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.